Predetermined sex revealed by a female transient gut in non-feeding larvae of Osedax (Siboglinidae, Annelida)

Abstract Background Within the symbiont-hosting Siboglinidae (Annelida), Osedax stands out as the sole genus capable of degrading bones and displaying pronounced sexual dimorphism (except O. priapus). While macroscopic, gutless females feed on whale falls with their symbiont-housing “roots”, males a...

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Bibliographic Details

Published in:	EvoDevo
Main Authors:	Alice Rouan, Norio Miyamoto, Katrine Worsaae
Format:	Article
Language:	English
Published:	BMC 2025-08-01
Subjects:	Sex determination Sexual dimorphism Rudimentary gut Lecithotrophic larvae Trochophore Vascular system
Online Access:	https://doi.org/10.1186/s13227-025-00251-9